As I am playing around with the crafting system I cannot help but suspect that the different ammo types mentioned in the title are only varied in their aesthetic appearance. Flame Glaze catches enemies on fire, Electric Charge electrocutes enemies and Acid Bath dissolves enemies. Is here an difference in the base damage of DoT of the ammo separate ammo types? I haven't actually taken the time to test this but from experience it seems as if there is no real advantage/disadvantage to using one ammo type over the other. Has anyone noticed this and/or put it to a test?

I haven't noticed a damage difference either, but (and this may just be me) it looked to me like the electric damage mods caused the necromorphs to pause slightly which can give you time to reload or move back

There is a difference between the ammo modifiers, and it really depends on your play style and weapons you use.

In terms of TOTAL damage, Acid Bath>Flame Glaze>Shock

But the thing is, Though Flame glaze and Acid bath are both DoT, The Acid Bath only does more damage because the time last longer. For a quicker more immediate damage, Flame Glaze does the most, which on my opinion is better as I don't tend to have the chance to wait for the DoT to kill the necro.

Shock is also very useful, though it does less damage then both the Glaze and the Bath, it stuns the enemies, meaning if they're charging you it will break the charge, causing them to stun for quick half a second or a second, which seems trivial if you haven't played on impossible.